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Omnidirectional Inductive Powering for Biomedical Implants

  • Bert Lenaerts
  • Robert Puers

Part of the Analog Circuits and Signal Processing book series (ACSP)

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Bert Lenaerts, Robert Puers
    Pages 1-12
  3. Bert Lenaerts, Robert Puers
    Pages 13-37
  4. Bert Lenaerts, Robert Puers
    Pages 39-81
  5. Bert Lenaerts, Robert Puers
    Pages 83-117
  6. Bert Lenaerts, Robert Puers
    Pages 119-138
  7. Bert Lenaerts, Robert Puers
    Pages 139-150
  8. Bert Lenaerts, Robert Puers
    Pages 151-173
  9. Bert Lenaerts, Robert Puers
    Pages 175-189
  10. Bert Lenaerts, Robert Puers
    Pages 191-195
  11. Back Matter
    Pages 197-222

About this book

Introduction

In the year 2000, a capsule endoscope was introduced on the market for diagnosis of small bowel diseases. This pill, about one centimeter in diameter, takes images of the gastric track and transmits them wirelessly to the outside world. Since the capsule is battery powered, the limited energy budget restricts both the amount and the quality of images that can be shot. To resolve this limitation, Omnidirectional Inductive Powering for Biomedical Implants investigates the feasibility of inductive powering for capsule endoscopy and freely moving systems in general. The main challenge is the random position and orientation of the power receiving system with respect to the emitting magnetic field. Where classic inductive powering assumes a predictable or fixed alignment of the respective coils, the remote system is now free to adopt just any orientation while still maintaining full power capabilities. Before elaborating on different approaches towards omnidirectional powering, the design and optimisation of a general inductive power link is discussed in all its aspects. Useful rectifier and inverter topologies are presented, including a class E driver that copes with coil deformations. Special attention is paid to the interaction of the inductive power link with the patient’s body. Putting theory into practice, the implementation of an inductive power link for a capsule endoscope is included in a separate chapter.

Keywords

biomedical engineering capsule endoscope inductive link omnidirectional tissue wireless powering

Authors and affiliations

  • Bert Lenaerts
    • 1
  • Robert Puers
    • 1
  1. 1.Dept. Electrical Engineering (ESAT)Katholieke Universiteit LeuvenLeuvenBelgium

Bibliographic information

  • DOI https://doi.org/10.1007/978-1-4020-9075-2
  • Copyright Information Springer Science+Business Media B.V. 2009
  • Publisher Name Springer, Dordrecht
  • eBook Packages Engineering
  • Print ISBN 978-1-4020-9074-5
  • Online ISBN 978-1-4020-9075-2
  • Series Print ISSN 1872-082X
  • Series Online ISSN 2197-1854
  • Buy this book on publisher's site